<p>A Houma man admitted Thursday to sexually abusing a 4-year-old in Terrebonne Parish, the Sheriff's Office said.</p><p>The girl's mother reported Feb. 5 that Christopher Warren Prosperie, 48, 213 Southland Circle Apartments, abused her daughter a few weeks prior to her filing the report, Terrebonne detectives said. </p><p>Prosperie met with detectives Thursday and admitted to being alone with the girl once and committing indecent acts, the Sheriff's Office said.</p><p>Prosperie is a family member of the alleged victim by marriage, detectives said.</p><p>He is charged with aggravated rape and is in the Terrebonne Parish Jail with no bond.</p>